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    <a href="../index.html">cppreference.com</a> &gt; <a href=
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    insert
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    Syntax:
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  <pre class="syntax-box">
  #include &lt;set&gt;
  iterator insert( iterator i, const <a href=
"../containers.html">TYPE</a>&amp; val );
  void insert( <a href=
"../iterators.html">input_iterator</a> start, <a href=
"../iterators.html">input_iterator</a> end );
  pair&lt;iterator,bool&gt; insert( const <a href=
"../containers.html">TYPE</a>&amp; val );
</pre>

  <p>The function insert() either:</p>

  <ul>
    <li>inserts <em>val</em> after the element at <em>pos</em> (where
    <em>pos</em> is really just a suggestion as to where <em>val</em>
    should go, since sets and maps are ordered), and returns an
    iterator to that element.</li>

    <li>inserts a range of elements from <em>start</em> to
    <em>end</em>.</li>

    <li>inserts <em>val</em>, but only if <em>val</em> doesn&#39;t
    already exist. The return value is an iterator to the element
    inserted, and a boolean describing whether an insertion took
    place.</li>
  </ul>

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    Related topics:
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    (C++ Maps) <a href="../cppmap/map_operators.html">Map operators</a>
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